METHOD FOR DETERMINING RELATIVE DETONATION CAPACITY OF GASEOUS AND DISPERSED CONDENSED COMBUSTIBLE MATERIALS AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC G01N33/22 

FIELD: chemistry.

SUBSTANCE: invention relates to methods and devices for determining relative detonation capacity of gaseous and liquid combustible materials. Method for determining relative detonation capacity of gaseous and dispersed condensed combustible materials comprises feeding combustible mixture, filling the detonation pipe with a combustible mixture, igniting the combustible mixture with a weak power source, accelerating the flame on the turbulent obstacles to form a shock wave traveling in front of the accelerating flame, local self-ignition of impact compressed combustible mixture with subsequent transition of combustion into detonation, detection of fact of transition of combustion into detonation and assessment of relative detonation capacity in comparison with reference combustible mixture, wherein components of combustible mixture can be supplied separately in form of gases and/or dispersed condensed combustible materials and to fill detonation pipe, creating in it flow of combustible mixture with specified thermodynamic and gas-dynamic parameters, ignition of combustible mixture by a weak energy source occurs cyclically, and the fact of transition of combustion into detonation is detected in each cycle from the time of transition of combustion into detonation, wherein to provide the same burning transition into detonation for various combustible mixtures using the phenomenon of focusing of the shock wave traveling in front of the accelerating flame, and the relative detonation capacity of the combustible mixture is evaluated by comparing the average time of transition of combustion into detonation, determined by several cycles, with that for the reference combustible mixture, wherein the number of cycles must be sufficient for statistical reliability of the obtained result.

EFFECT: high accuracy of detonation capacity of various gaseous and dispersed condensed combustible materials.

11 cl, 2 dwg